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HomeMy WebLinkAboutNC0088889_Fact Sheet_20180808FACT SHEET FOR EXPEDITED PERMIT RENEWALS This form must be completed by Permit Writers for all expedited permits which do not require full Fact Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks, etc) that can be administratively renewed with minor changes, but can include facilities with more complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monitoring, compliance concerns). Basic Information for Expedited Permit Renewals Permit Writer/Date Joe R. Corporon, L.G. 30Ma 2018 Permit Number NCO088889 Facility Name Aqua NC — Hopson Downs WTP Basin Name/Sub-basin number Neuse Receiving Stream UT to Basal Creek Stream Classification in Permit B -NSW Does permit need Daily Max NH3 limits? No Does permit need TRC limits/language? No, already included Does permit have toxicity testing? No Does permit have Special Conditions? No Does permit have instream monitoring? No Is the stream impaired (on 303(d) list)? No Any obvious compliance concerns? No Any permit mods since last permit? Yes: Terms updated per WTP strategy changes 2/8/2012 Current expiration date A ri130, 2018 New expiration date Aril 30, 2023 Comments received on Draft Permit? This facility has been permitted in the past as a discharge from a greensand filter system. RRO inspected the facility in September 2012 and found the facility to be not exactly as had been permitted previously. The installed system is an AdEdge filter treatment system. It's essentially a greensand filter system, but the facility installed on site is designed to operate as a 100 % recycle system, with backwash water returning to the head of the WTP and backwash solids removed. The permit has been drafted to reflect the system's design and operation, considering that discharge may occur very infrequently, and only under extraordinary conditions. The permittee describes these conditions as "problems that preclude use of backwash water." If discharge does occur, the Permittee expressed confidence that the system will meet greensand filter backwash quality, noting that solids -slurry is removed regularly from the system. As a result, the monitoring frequencies for flow, TSS, pH, TRC and turbidity have been set as "episodic," with a note stating the facility does not need to monitor more than twice per month, should multiple discharges occur during any particular month; no other changes recommended. FACT SHEET FOR EXPEDITED PERMIT RENEWALS This form must be completed by Permit Writers for all expedited permits which do not require full Fact Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks, etc) that can be administratively renewed with minor changes, but can include facilities with more complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monitoring, compliance concerns). Basic Information for Expedited Permit Renewals Permit Writer/Date Joe R. Corporon, L.G. 30Ma 2018 Permit Number NCO088889 Facility Name Aqua NC — Hopson Downs WTP Basin Name/Sub-basin number Neuse Receiving Stream UT to Basal Creek Stream Classification in Permit B -NSW Does permit need Daily Max NH3 limits? No Does permit need TRC limits/language? No, already included Does permit have toxicity testing? No Does permit have Special Conditions? No Does permit have instream monitoring? No Is the stream impaired on 303(d) list)? No Any obvious compliance concerns? No Any permit mods since last permit? Yes: Terms updated per WTP strategy changes 2/8/2012 Current expiration date Aril 30, 2018 New expiration date Aril 30, 2023 Comments received on Draft Permit? This facility has been permitted in the past as a discharge from a greensand filter system. RRO inspected the facility in September 2012 and found the facility to be not exactly as had been permitted previously. The installed system is an AdEdge filter treatment system. It's essentially a greensand filter system, but the facility installed on site is designed to operate as a 100 % recycle system, with backwash water returning to the head of the WTP and backwash solids removed. The permit has been drafted to reflect the system's design and operation, considering that discharge may occur very infrequently, and only under extraordinary conditions. The permittee describes these conditions as "problems that preclude use of backwash water." If discharge does occur, the Permittee expressed confidence that the system will meet greensand filter backwash quality, noting that solids -slurry is removed regularly from the system. As a result, the monitoring frequencies for flow, TSS, pH, TRC and turbidity have been set as "episodic," with a note stating the facility does not need to monitor more than twice per month, should multiple discharges occur during any particular month; no other changes recommended.